After searching for help on this problem, and not finding any, I thought I’d post this for the benefit of others. I recently started having trouble streaming some content to my Roku, primarily live feeds from CNN and Al Jazeera. When launching the feed, the Roku would start to buffer the video and then just hang. I would have to power it off and back on to regain control. I never did find the source of the problem, but I was able to fix it by performing a factory reset. I hope this helps anyone else out there who might be having the same problem.
We should be careful to get out of an experience only the wisdom that is in it, and stop there; lest we be like the cat that sits down on a hot stove-lid. She will never sit down on a hot stove-lid again, and that is well; but also she will never sit down on a cold one anymore.
-- Mark Twain